| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have introduce the | 92 |
|
| 2 | have introduced the | 89 |
|
| 3 | has introduce the | 30 |
|
| 4 | have introduce the | 25 |
|
| 5 | had introduce the | 17 |
|
| 6 | have introduce the | 9 |
|
| 7 | having introduce the | 5 |
|
